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In this activity, learners make their own "tornado" using two soda bottles and water.

In this activity, learners create a tornado in a bottle to observe a spiraling, funnel-shaped vortex. A simple connector device allows water to drain from a 2-liter bottle into a second bottle.

In this activity about problem-solving, learners build a house for the Three Little Pigs using twenty straws and two index cards.